Nonsystolic HF: Nonsystolic heart failure or diastolic dysfunction means that the heart is operating inefficiently in the relaxation phase. This occurs because of damage to heart muscle by untreated hypertension, or from other causes. Exertional breathlessness has many other causes besides heart failure, & if you've had the heart checked already it may be time to look at lungs etc. A consult on HealthTap may help
Answered 10/27/2018
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